[Bug-AUCTeX] AUXTEX BUGS

[Alby Fisher]

Dear AUCtex,

I am using AUCtex via aquamacs on my new mac.
The aquamqcs people said the following bug must be with 
AUCtex, not with aquamacs...
here goes...

 when editing my rather long file, the colors change partway through -
 the main text becomes pink rather than black-
 and anything cut and pasted after that point works much slower  
 than on the
 earlier part.
 What is going on???


When I removed the lines where this occured, everything returned to 
normal.
Yet there is apparently no latex error, as it gives me 
no error message, and as it tex's and prints correctly.

the aquamacs folks suggested it is a problem of AUCtex not recognizing 
what I had written (???)

Here are the offending lines:






\[
\begin{CD}
\cdots R_{-1}    @>M_{-1}>>    R_0    @>M_0>>  R_1 @>M_1>> R_2   @>M_2>>   
R_3
\cdots\\
\end{CD}
\]


(this one works just fine!!!)


\[
\begin{CD}
\cdots C_{-1}    @<M_{-1}<<    C_0    @<M_0<<  C_1 @<M_1<< C_2  
 @<M_2<<   C_3
\cdots\\
\end{CD}
\]


(this one doesn't!!!)
help please!!!!

thanks much,
alby fisher